This idea is actually from the pastor of the church I work for, named Jürgen Schmidt.
Hand out three small strips of paper (equal length) to each of the youth. Then have them write one person or thing that is the most important to them on each piece of paper(they can come up with anything – Mom, house, computer, friends – as long as it is physical in nature. No writing of God or Jesus, for example.).
Then they must hold all 3 pieces of paper in their hands like holding a deck of playing cards. The MC explains that the youth workers represent death and death is going to come and take away one of their pieces of paper randomly. Have the workers do so. Then ask the youth what they lost.
They will probably expect the exercise to be over, but then say that death keeps on coming back. Have the workers take a second of their pieces of paper. Ask what they still have left. Of course, the youth will be clinging on to their last piece of paper very tightly. It is at this point that you have death come around a last time and take what’s left from them.
The youth will have a range of emotions following this. The MC should then explain that that is what happens in life. Death eventually takes all, including our own lives. This can lead into a great discussion. But do make sure to end off with explaining how Christ’s resurrection conquered death giving us access to eternal life after death. And God’s future kingdom will eliminate death completely. Encourage them with this good news and encourage them to share it with others.